Eliane Rogeri lets 2 of the 5 'Patous' [Great Pyrenees sheepdog] that she and her husband own out of their kennels under the farmhouse, La Bollène Vésubie, Alpes-Maritimes, France, 02 August 2013. Fleas have become a problem on the farm since the arrival of wolves in the mountains: the Patous catch fleas from the wolves, which then breed on the dogs, and transfer to their handlers.